The optimal technique for EUS-FNA has not been established. The reported accuracy rate of EUS-FNA (which contains heterogeneous sampling techniques, including with and without a stylet) is 71-98% for pancreatic masses, 90% for lymph nodes, and 67-92% for submucosal gastrointestinal lesions. Typically, FNA is performed with or without a stylet using a 22 gauge or 25 gauge needle with similar diagnostic accuracy.